I nicked this from Deanna Lepsch. This is fascinating to me for many reasons, but especially since I've been doing so much research about early atomic bombs for my novel. It's worth watching the entire way through (only about 15 minutes):
Japanese artist Isao Hashimoto's "1945-1998" is an animated map showing the 2,053 nuclear explosions that took place around the world during the 20th century, from the detonations at Alamogordo, Hiroshima and Nagasaki in 1945 to the tests conducted by India and Pakistan in 1998.
Here's a link to MAKE if you can't see the above embedded video: